{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16951",
    "entityType": "User",
    "nonce": "0x2288902a1d2337d4b5ff3befed74b32be822f1b25d3d1be8a5253905d6b36fd4",
    "signature": "0xacab2fc3a35330636292e4d5c953c328c53477062068ed717a52910308e56d6c4eff52f34ed450611618dd449c2b52d34e858cf897e657c97c0657390ad2f8971c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}